One dog that was inside the house died in the fire, and three dogs were rescued.

Payne said the explosion could have put the neighborhood in danger.

"Deputies found over 400 butane canisters being stored inside the residence. Fortunately, the fire did not reach the main butane storage area, which had over 300 of the canisters. Had these been ignited it could have further jeopardized the Bonita Drive neighborhood," Payne said.

Another hash oil lab exploded on Wednesday at an apartment on the 100 block of Lindberg Street in Santa Cruz.

Firefighters discovered that the blast was the result of a 48-year-old man in the garage trying to produce concentrated cannabis. His wife and young child were at home at the time of the explosion.

Prosecutors are reviewing the two hash oil lab cases to determine what criminal charges will be filed.

"Labs are becoming a major public safety concern in our communities. Santa Cruz has experienced a number of such explosions causing major injury and exposing neighborhoods to a serious safety threat," Santa Cruz police said.